T. Mindt, H. Struthers, E. Garcia-Garayoa, D. Desbouis, and R. Schibli, “Strategies for the Development of Novel Tumor Targeting Technetium and Rhenium Radiopharmaceuticals”, Chimia, vol. 61, no. 11, p. 725, Nov. 2007, doi: 10.2533/chimia.2007.725.